Run test on Django 4.2

[mumarkhan999]

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[christopappas]

django itself is not update to 4.2 here: https://github.com/openedx/ecommerce/pull/4076/files#diff-0940fec0afe21798f617cc4522db676f15769ae28a72992b8d19216ef7b1c3b5L106

[mumarkhan999]

django itself is not update to 4.2 here: https://github.com/openedx/ecommerce/pull/4076/files#diff-0940fec0afe21798f617cc4522db676f15769ae28a72992b8d19216ef7b1c3b5L106

Already aware of that. The upgrade job was failing on github and locally so just added test support for django42.
@zubair-ce07 will update the actual version.